Import-Export images to planes not working
Have you tried installing the addon manually? I'm not sure why it doesn't show up, so I went ahead and got the addon for you from my addons folder, try installing it as an external addon to see if it works https://drive.google.com/file/d/1FlUA9t1jur1BGJm_8ABI1kJeMC2xL33I/view?usp=sharing